CooCenter-System-kernel/include/drm/drm_cache.h

/**************************************************************************
 *
 * Copyright 2009 Red Hat Inc.
 * All Rights Reserved.
 *
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 * "Software"), to deal in the Software without restriction, including
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 * permit persons to whom the Software is furnished to do so, subject to
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 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/*
 * Authors:
 * Dave Airlie <airlied@redhat.com>
 */

#ifndef _DRM_CACHE_H_
#define _DRM_CACHE_H_

void drm_clflush_pages(struct page *pages[], unsigned long num_pages);

static inline bool drm_arch_can_wc_memory(void)
{
#if defined(CONFIG_PPC) && !defined(CONFIG_NOT_COHERENT_CACHE)
	return false;
#elif defined(CONFIG_MIPS) && defined(CONFIG_CPU_LOONGSON3)
	return false;
#else
	return true;
#endif
}

#endif